8 Troubleshooting
272
SMGB0064 rev.0 - 08/2011
Alarm code
54
Increase in the inverter n temperature for ES Series
• The RUN LED ickers and “ALARM” is displayed on the remote control switch.
• The unit number, the alarm code and the unit code are alternately displayed on the set temperature section. The unit
number and the alarm code are displayed on the display of the outdoor unit PCB.
- This alarm is displayed when the inverter n temperature increases the abnormal value three times within 30 min-
utes. The retry operation is performed twice.
Conditions:
• When the temperature of the thermistor for inverter n excess 80 ºC (RAS-(4-6)HVRNS2E) or 100 ºC (RAS-(8/10)
HRNSE) 3 times in 30 minutes, this alarm is indicated and the operation is stopped. In the case the occurrence is
smaller than 2 times, retry is performed.`
2
N O T E
1*): Perform the high voltage discharge work by referring to the item Procedure of checking other main parts for
ES Series, see on page 312 before checking and replacing the inverter components.
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